bone
To determine or test by eye the evenness or regularity of a line, or of a blank" >series of lines or blank" >points, or of a blank" >target="_blank" >surface; as, to sight along a blank" >series of rods which are adjusted so as to range, and on which a blank" >target="_blank" >glossary/line/" class="glossaryLink" data-cmtooltip="a4def95225a7dc834866535fa498956e" target="_blank" >grade-line/" class="glossaryLink" data-cmtooltip="a4def95225a7dc834866535fa498956e" blank" >target="_blank" >line/" class="glossaryLink" data-cmtooltip="a4def95225a7dc834866535fa498956e" target="_blank" >grade may be marked. Written also born and blank" >target="_blank" >bourne. (Sturgis, 1900)